Compound or mixture from which to make forms for producing castings or objects from materials of any kind.



JOHANN RINGEL, or sraessnunc, G'nmvumsz".

COMPQUND on MIXTURE rnoM wnrorr TO MAKE roams ron PRODUCING 'c'As'rInGs or, owners FROM MArERIALsior ANY KIND.

11,200,138, Specification. of Letters Patent. Patented O t, 3, 1916. No Drawing. Application filed May 21, 1913. Serial No. 769,039. I i To all whom it may concern: I will, now proceed to describe my inven- Be it linown that I, JOHANN RINGEL, a tion more particularly. citizen of the Empire of Germany, residing IFor casting metals the form is made from at 31 Dreizehnergraben, Strassburg, in A1- a mixture of 54 parts of dehydrated gyp- 5 sace, in the Empire of Germany, have insum and of from 147 to 183 parts of pozvented .a new and useful Compound or zuolana. For casting glass or forming Mixture from Which to Make Forms for plastic hot glass the form is made from a Producing Castings or Objects from Matemixture of 54 parts of dehydrated gypsum rials of Any Kind, of which the following and from 96 to 142 parts of pozzuolana.

L0 is'a specification. The following list will indicate the com- My invention relates to a novel mixture pOSltlOII of the mixture for making forms for making forms for producing castings for various purposes:

or objects from materials of any kind, Form for enamel 54 parts of gypsum and which mixture presents special advantages .96 parts of pozzuolana.

15 as will hereinafter be set forth. For mak- Form for crystal-glass: 54 parts of gyp- I ing the forms proper I employ a mixture sum and 118 parts of pozzuolana.

of pozzuolana and dehydrated gypsum, to Form fpr colored glass: 54 parts of gyp which in certain cases also other indifferent sum and 36 parts of pozzuolana. materials, such as kaolin, ocher, ultramarin'e Form for pure glass: 54 parts of gypsum 20 and the like, may be added. The mixture and 142 parts of pozzuolana.

of pozzuolana and gypsum is useful for Form for tin-and lead: 54 parts of gypmaking forms intended for the casting of sum and 147 parts of pozzuolana.

metals. When the forms to be made are Form for silver and gold: 54 parts of intended for the casting or forming of obgypsum and 158 parts of pozzuolana.

25 ects from enamel, glass, etc, the said mix- Form for bronze: 54 parts of gypsum so ture will also answer the purpose and for and 169 parts of pozzuolana.

certain cases the additions named above to Form for iron and steel: 54 parts of gypthe mixture will be found to be particularly sum and 183 parts of pozzuolana. useful. The forms made from the novel Experience will easily and soon show 3() mixture can be heated up to a very high how muc of the additions to this mixture,

temperature Without falling to pieces which such as kaolin,ocher, Ultramarine, and the is not possible With any of the materials like, may be taken, if so preferred. The hitherto used for making forms. ThlS imessential point is, that the form made from portant property of the novel mixture renthe mixture will withstand the selected high 35 ders it particularly suitable for the manutemperature up'to which the form is first facture of glass objects. When any form heated, without falling to pieces.

thus once heated is again heated by the cast- \Vhez during the first heating the form is ing of the object or by the forming of the heated up to a moderate temperature and a hot plastic glass, this form will easily fall semi-fluid plastic glass is blown or pressed 40 to pieces, so that the object produced. can into the form, a very bri ht glass object will be easily freed from the adhering pieces. he obtained, in which the details are more or For the manufacture of glass objects the less indistinct which in some cases is very first heating of. the form is necessary, as desirable for artistic reasons. .When a very thereby and by means of the second heating porous form is heated up to a bright red 45 it is rendered possible to obtain various deheat and a glass as liquid'as possible is cast grees of luster, gloss or matting of the glass into the form a glass object with a strong by ad usting the temperature of the form matting will be obtained, in which the deduring the first heating and by selecting the tails are very distinct. By varying the temcomposition oi the mixture for the form. perature up to which the form is first heated,

5o Thepatterns for making the forms may further by varying the degree of porosity of be hard or soft and may even for example the form and by varyingthe degree of be replaced by natural plants or the like. liquidity of the plastic glass most diversified,

. en casting metals or the like it is even kinds of glass objects can be obtained; I lay possible to produce objects as fine as for special stress upon the possibility of pro- 55 example leer/es or the like of natural plants. ducing with a. single casting or forming 1 Q 4 v 1,200,1es

diversified degrees of matting upon the same possible to make forms by applying clay glass object by merely adjusting the degree to soft objects. However, the forms so proof porosity of the form and-by multiplying duced can not be compared to the forms 35 or omitting the small air-holes, whichpossimade according to my mixture. 1 particu- I bility is valuable for practical and artistic larly point out, that the forms made from reasons. gypsum alone or from clay can not with- For making a form the constituent parts stand the heat during casting. named above of the mixture are first pow I claim: 4 40 dered and mixed. Then the mixture is 1. A compound for forming heat resistwetted with cold water in a bowl or dish so ing molds, consisting of a mixture of as to form a liquid paste. This paste bepozznolana with a lime ingredient consisthaves like wetted plaster, hat is to say it ing solely of dehydrated gypsum. warms and hardens during cooling. It can 2. The mixture of 54 parts of dehydrated 45 be applied to all patterns, whether they be gypsum and of from 96 to 183 parts of -hard .or soft or whether they be made of pozzuolana for the formation of a form or metal or clay, wan er-the like, also the paste mold. I may be applied-to natural objects, such as 3. A compound for forming heat resistplants or the like. ing molds, consisting of a mixture of 50 The relatively onsiderable percentage of pozzuolana with a lime ingredient consistdehydrated gypsum in the mixture renders ing solely of dehydrated gypsum in definite it. possible to make the formgon any pattern relative quantities, and associated with an or ob3ect, While thepozzuolana of the mixindifferent material it) add body to the mixture enables th'e'form to become sufiiciently ture.

fire-proof for withstanding the above men- 4. The mixture of 54: parts of dehydrated 2 tioned high temperature during the first gypsum and of from 96 to 183 parts of heating without falling to pieces while it pozzuolana with the addition of an indifferis the second heating during the casting of ent material'for the formation 'of a form metal or during the blowing or pressing the or mold.

hot plastic glass, which causes the form to JOH'ANN RINGEL. again fall to pieces. Witnesses:

-I am aware that it is known to make D; RIFI, forms from gypsum alone, also that it is CHARLES A. HALLEY, Jr.

@opiea at this patent may be obtained for five cents each, by addressing the "Gctotoner oi! Entrants,

I 1 Washington, I. C. 

